lifeboat: The Book of Ratings rates danger symbols (via Ian Albert). Very enjoyable, and brings up the question of how to mark new threats. All the truly cool transhuman technologies are going to require warning signs.

Maybe we should define a RFID standard for this kind of hazard warnings, if it doesn’t already exist? Every container or dangerous object has a RFID tag that enables a “danger detector” to tell that there is a particular problem nearby.[ read more ]